Improvement in bobbins



UNITED STATE TE 'r FFIG SCAR E. WAIT, OF LYNN, ASSIGNOR TO JAMES A.WOODBURY, OF BOSTON, MASSACHUSETTS; SAID WOODBURY ASSIGNOR TO THELAWRENCE SPOOL COMPANY.

IMPROVEMENT IN BOBBINS.

Specification forming part of Letters Patent No. 195,060, datedSeptember 11, 1877; application filed May 31, 1875.

To all whom it may concern:

Be it known that 1, OSCAR E. WAIT, of Lynn, in the county of Essex andState of Massachusetts, have invented certain new and usefulImprovements in the Manufacture of Spools and Bobbins, of which thefollowing, taken in connection with the accompanying drawings, is aspecification.

My present invention relates to the application of rawhide to the headsor flanges of spools or bobbins; and has for its object the productionof a better spool or bobbin than can be made from wood alone, and at aless cost than heretofore Where rawhide has been used; and my saidinvention is an improvement upon the invention patented to F. E. Darrowand myself, November 3, 1874 and it consists in protecting the outerrounded edge of the head of a spool or bobbin by means of narrow ribbonsor strips of rawhide, having parallel edges, wound circum ferentiallyaroun d the spool or bobbin-head, and at the same time turned radiallydown around said rounded edge upon either side thereof, and firmlysecured thereto by glue or other suitable adhesive material, the outerportions of the inner surface of said head or heads being reduced tomake room for the rawhide, the hide having been previously prepared, bysoaking it in Water or otherwise, to make it pliable and to swell it, sothat the shrinkage thereof, when it dries, after having been secured tothe bobbin or spool, will cause it to hug closely to the wood, thusadding greatly to the strength of the spool or bobbin head.

My invention further consists in the use of a spool or bobbin having theouter portion of the inner face of its head or heads reduced inthickness to an amount about equal to the thickness of the rawhide to beadded, in combination with a ribbon of rawhide wound circumferentiallyaround said head and wrapped radially around the rounded edge of saidhead, as will be described.

Figure 1 of the drawings is an end view of a spool having my inventionapplied thereto. Fig. 2 is a central longitudinal section of the same;and Fig. 3 is a small portion of a ribbon of rawhide of suitable widthfor covering the rounded edge of the spool-head.

In the manufacture of spools having large heads, such as shown in Figs.1 and 2, the barrel A and heads B are made of wood, united in the usualmanner, and the w ole turned to the usual shape, except tha the outerrounded edge and a portion of the.inner radial face of the headcontiguous to the rounded edge are reduced in thickness an amount aboutequal to the thickness of the hide a with which it is to be covered.

A ribbon of rawhide, suitably prepared, and of a width equal to thedistance from the point b on the inner face of the head, measuringradially outward and around the rounded edge of the head to the point a,and having one side coated with glue or other adhesive material, is thenwound circumferentially around the head, while at the same time its twoedges are folded down around the curved edge of the head. Suitableclamps are then applied to hold the hide in place, and press it closelyinto contact with the wood, and are allowed to remain till the glue andthe hide are thoroughly dried, when they are removed, and the spoolplaced in a lathe, and the outer surface of the hide is turned to removeany irregularities in its outer surface.

This is a very great improvement over the manner of applying the hideillustrated in the patent herein'before cited, for the reasons thatwhile it costs less, on account of the-reduction of the amount of hideused, it serves practically every beneficial purpose that was gained inthat, by covering the .wbole inside of the spool-head with rawhide, andwhen applied to spools or bobbins having largethin heads is verysuperior to the former invention, because when the whole inside of thehead is covered with rawhide, as illustrated in the patent before cited,the contraction of the large surface of rawhide upon the inside of thehead, in drying, is very liable to cause the thin head to warp, whichefiectually ruins the spool or bobbin for practical use.

This difficulty is entirely overcome by using my present invention, ifcare is taken to so apply the ribbon of hide that about an equal amountof the hide shall be upon each side of the head.

' when applied in the form of adisk secured to the inner face of thehead, and its outer edge turned over the rounded edge of the head, aswas the casein the invention before cited.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is as follows:

A spool or bobbin made of wood, and havin g the outerrounded edgeof itshead or heads reduced from b to d, and covered with a ribbon or band ofrawhide wound circumferentially around the same, and having its twoedges turned down over said rounded edge to cover about equal portionsof either side of the head, and secured thereto by glue or othersuitable adhesive material, substantially as described.

Executed at Boston this 17th day of May, 1875.

OSCAR E. WAIT.

Witnesses:

WM. 1?. EDWARDS, E. A. HEMMENWAY.

